<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script src="./vue.js"></script>
</head>
<body>
    <div id="app">

       <myheader></myheader>
       


    </div>
    <script>
        Vue.component("myheader",{
            template:`
                <div>
                    <h1>{{ title }}</h1>
                </div>
            `,
            data(){
                return {
                    title:"小米"
                }
            }
        })



        new Vue({
            el:"#app",
           
            
        })

    </script>
</body>
</html>